1. This amendment on Form 4/A is being filed to correct an overstatement of the amount of securities directly beneficially owned by the reporting person. Mr. El-Hibri's direct holdings include restricted stock units granted under the 2nd Amended and Restated Emergent BioSolutions Inc. 2006 Stock Incentive Plan and the Amended and Restated Emergent BioSolutions Inc. 2006 Stock Incentive Plan. Mr. El-Hibri's restricted stock units vest in equal annual installments beginning on the anniversary of the grant date, assuming continued service with the company. Each restricted stock unit represents the right of the reporting person to receive one share of common stock of Emergent BioSolutions Inc., subject to adjustment as provided in the grant agreement.

2. Mr. El-Hibri's holdings through Intervac, L.L.C include 1,638,403 shares of common stock held by Mr. El-Hibri and his wife, as tenants by the entirety, through their 37.7% equity interest in Intervac, L.L.C.; 127,721 shares held by Mr. El-Hibri's wife; and 584,207 shares held by trusts indirectly controlled by Mr. El-Hibri or his wife. Mr. El-Hibri disclaims beneficial ownership, for purposes of Section 16 of the Exchange Act or otherwise, of those shares held solely by his wife and those shares held by the trusts.

3. These shares are held in a trust for the benefit of a child of the reporting person. The reporting person is trustee of this trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

4. Mr. El-Hibri holds individually and with his wife, as tenants by the entirety, an aggregate 89.2% equity interest in Biovac, L.L.C. Biovac, L.L.C. is the direct owner of 1,524,155 shares of Common Stock. Mr. El-Hibri disclaims beneficial ownership of the shares of Common Stock directly owned by Biovac, L.L.C. for purposes of Section 16, except to the extent of his pecuniary interest in 1,359,546 shares.

Remarks:

/s/ Carl A. Valenstein, attorney-in-fact

04/07/2014

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).